From 49d8fa1058aaf23c29e074b2314492ae40d2f557 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Tue, 21 Feb 2017 12:05:07 +0000
Subject:  Types change: big pass on libstddjb and libunixonacid

 libdatastruct still missing, library still not functional
---
 src/libstddjb/cdb_init_map.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/libstddjb/cdb_init_map.c')

diff --git a/src/libstddjb/cdb_init_map.c b/src/libstddjb/cdb_init_map.c
index bf8eb9d..de9aad0 100644
--- a/src/libstddjb/cdb_init_map.c
+++ b/src/libstddjb/cdb_init_map.c
@@ -1,8 +1,14 @@
 /* ISC license. */
 
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
+#include <stdint.h>
+#include <errno.h>
 #include <skalibs/cdb.h>
 
 int cdb_init_map (struct cdb *c, int fd, int domap)
@@ -12,6 +18,7 @@ int cdb_init_map (struct cdb *c, int fd, int domap)
     struct stat st ;
     char *map ;
     if (fstat(fd, &st) < 0) return 0 ;
+    if (st.st_size > UINT32_MAX) return (errno = EOVERFLOW, 0) ;
     map = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
     if (map == MAP_FAILED) return 0 ;
     c->fd = -fd-2 ;
-- 
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